Use After Free in Oracle Linux
CVE-2022-21504
The code in UEK6 U3 was missing an appropiate file descriptor count to be missing. This resulted in a use count error that allowed a file descriptor to a socket to be closed and freed while it was still in use by another portion of the kernel. An attack with local access can operate on the socket, and cause a denial of service. CVSS 3.1 Base Score 5.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (14.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 14.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Oracle Linux — versions 7, 8
- Oracle Corporation Linux — versions Oracle Linux: 7, Oracle Linux: 8
Weakness classification (CWE)
References
- github.com/oracle/linux-uek/commit/49c68f5f892d8c2be00e0a89ff2a035422c03b59 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-21504?
- CVE-2022-21504 is a medium-severity vulnerability in Oracle Linux, classified under Use After Free. CVSS score: 5.5/10. Published 2022-06-14.
- How severe is CVE-2022-21504?
- Medium severity. CVSS v3 base score is 5.5 out of 10.